I don't have much experience of Asian culture but the Asians I have known were mostly tiny. I live in Portugal. Older Portuguese people will often comment that you are fatter. It isn't an insult to them though. They come from a time when food was something most people worked hard to have enough of so being plump was actually a good thing as it was a sign you were doing well financially. So commenting that someone had put on weight was a compliment. Kind of like admiring someone's new car or how nice their house is.